12801117 has 16 divisors (see below), whose sum is σ = 20533760. Its totient is φ = 6929712.

The previous prime is 12801101. The next prime is 12801121. The reversal of 12801117 is 71110821.

12801117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12801117 - 2⁴ = 12801101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12801093 and 12801102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12801127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15643 + ... + 16440.

It is an arithmetic number, because the mean of its divisors is an integer number (1283360).

Almost surely, 2^12801117 is an apocalyptic number.

It is an amenable number.

12801117 is a deficient number, since it is larger than the sum of its proper divisors (7732643).

12801117 is a wasteful number, since it uses less digits than its factorization.

12801117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32112.

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 12801117 is about 3577.8648660898. The cubic root of 12801117 is about 233.9282232921.

Adding to 12801117 its reverse (71110821), we get a palindrome (83911938).

The spelling of 12801117 in words is "twelve million, eight hundred one thousand, one hundred seventeen".